Electric fireplace



FIG. 1 is a top and front perspective view of an electric fireplace showing my present design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a right side and front perspective view.

The dashed broken lines represent unclaimed portions of the electric fireplace and form no part of the claimed design. 

CLAIM The ornamental design for an electric fireplace, as shown and described. 